Electronic string instrument



FIG. 1 is a front perspective view of an electronic string instrumentshowing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a right-side view thereof;

FIG. 5 is a left-side view thereof;

FIG. 6 is a top plan view thereof; and

FIG. 7 is a bottom plan view thereof.

The ornamental design for electronic string instrument, as shown.